Description
Version 3.0.7 of the Securly Chrome Extension downloads config.json over HTTP and compiles server-provided patterns as JavaScript regular expressions via new RegExp() without complexity validation. An on-path attacker can inject specific patterns to cause catastrophic backtracking, resulting in denial of service on all browsing.
References (1)
Core 1
Core References
Scores
CVSS v3
7.5
EPSS
0.0033
EPSS Percentile
24.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-1333
CWE-917
Status
published
Products (2)
securly/securly
3.0.7
Securly/Securly Chrome Extension
< 3.0.7
Published
Jun 03, 2026
Tracked Since
Jun 04, 2026